Use data argument for ajax request

The parameters need to be url-encoded to prevent and invalid characters
in the parameters (if using & in a field for example).
Remove javascript events before adding them in initializer

If the initializer function is called multiple times, the events will be
readded and the ajax request may be done multiple times.
By removing the events before, it will prevent this problem.
OpenLayers.map_layers upgraded
openlayers provided by openlayers-rails gem
bug fixed : using right path for images
added toggleControls
new builder
toggle-->switch
upgraded to OpenLayers Release 2.13.1
simple_map_handler cleanup
js_builder/js_map/js_handler
cleanup debug
cleanup
zoomToExtentAfterLayerLoadend
js_builder delegated methods